Preconfigured Downlink Resources for IoT Power Efficiency
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing downlink resources, particularly for IoT devices with predictable traffic patterns, leading to increased power consumption and resource monitoring efforts.
Innovation Solution
The implementation of preconfigured downlink resources (PDR) allows wireless devices to request and receive configured downlink transmissions based on traffic pattern information, optimizing resource allocation and reducing unnecessary monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless devices continuously monitor downlink resources to ensure reliable data reception, then reception reliability is improved, but power consumption increases
Solution Approach 1:
The network pre-configures downlink resource information (time, frequency, resource blocks) for IoT devices before actual data transmission. Devices know in advance when and where to monitor for downlink data, eliminating the need for continuous monitoring and reducing power consumption while maintaining reliable reception.
Solution Approach 2:
Instead of continuous monitoring, the patent implements periodic monitoring at pre-configured time intervals. IoT devices monitor downlink resources only at scheduled times specified in the pre-configured resource information, reducing overall monitoring activity and power consumption while ensuring data is caught during transmission windows.
2Reliability
If wireless devices monitor all downlink resources to ensure no data is missed, then data reception completeness is improved, but device complexity increases
Solution Approach 1:
The network provides pre-configured downlink resource information in advance, including specific time slots, frequency resources, and resource block allocations. This preliminary information tells devices exactly what to monitor, simplifying the monitoring process from examining all possible resources to checking only predetermined resources.
Solution Approach 2:
The patent applies different monitoring strategies to different resource types. Instead of uniform monitoring across all downlink resources, devices monitor only specific localized resources (time-frequency slots) that are pre-configured and relevant to their traffic patterns, reducing overall complexity.
3Adaptability or versatility
If preconfigured downlink resources are allocated for all possible traffic scenarios, then adaptability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The pre-configured downlink resource information includes multiple alternative configurations for different traffic scenarios (different time slots, frequency resources, resource block allocations). The network can dynamically select and activate appropriate configurations based on actual traffic conditions, providing adaptability without permanently allocating all possible resources.
Solution Approach 2:
The pre-configured resource information structure is designed to handle multiple traffic patterns and scenarios using a unified framework. A single pre-configuration message can contain multiple resource allocations that serve different purposes (different traffic types, different priorities), making the system versatile without requiring separate dedicated resources for each scenario.
Data Source
AI summary
A method and apparatus for downlink transmission using preconfigured downlink resource in a wireless communication system is provided. A wireless device transmits, to a network, a message to request downlink resource for downlink transmission, wherein the message includes traffic pattern information for the downlink transmission. A wireless device receives, from the network, a configuration for the downlink resource. A wireless device receives the downlink transmission based on the downlink resource.